Why don't you use Windows Media Player 10? Version 9 comes with the XP SP2 pack, you can then upgrade online to Version 10. I think it's one of the most stable media players for Windows.
I already had the Kazaa Lite Codec Pack, and uninstalled it so i could download and install the newest version (the mega one). After this i tried to play a .mpg video file using media player classic, and there was a problem. The audio was perfect, but the video was distorted and "moving slowly" for example freezing/stuttering at certain parts.
I tried to play another file this time an .avi and the same problem occured though there was some improvement. When this happened, i thought there must be a problem with media player classic so i used BS Player and the same problem occured again!
Could anyone help me out please